Sound-reproducing instrument



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June 28, 1927.

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T. BREWIN SOUND REPRODUCING INSTRUMENT e Sheets-Sheet. 3

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Mn P 1,633 760 June 28, 1927. T. BREWIN SOUND REPRODUCING' INSTRUMENT Filed Oct. 20, 1923 s sheets-sheet 4 J7 57 1714 lvvavrmw lrromvsr June 28, 1927. 1,633,760

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June 28, 1927. I 1,633,760

T. BREWIN sourw REPRODUCING LFNSTRUMENT Filed Oct. 20, 1923 e Sheets-Sheet 6 ]Zamae -B2ww22.

, gripping PATENT OFFICE.

THOMAS BBEWIN, OF FIFE, SCOTLAND.

SOUND-PRODUCING INSTRUMENT.

Application filed October 20,

This invention relates to improvements in a sound reproducing machine rovided with record and tone arm manipu ating mechanism adapted to be actuated from a distance, and has for its object to enable records stored in compartments in the machine to be selected, played and returned to their compartments under the control of an operator, without its being necessary for the operator to handle the records or any of the working parts of the gramophone proper.

According to this invention, the machine comprises a sliding carrier capable of being positioned opposite any one of the record compartments, and a record gripping device' mounted on a swinging arm adapted to execute vertical and horizontal swingingmovements about a support on the sliding carrier and to rotate about its own axis, under the control of a hollow cam member adapted to rotate about the support for the swinging arm and formed with a spiral slot engaging the arm and co-operating in the control of the arm with fixed guides on the sliding carrier. Means actuated by the movements of the record gripping device and swinging armare vprovided for transferring records from the record compartments to the gripping device and from the gripping device to the record compartments, for actuating the record gripping device to grip and release a record at the required times, and for manipulating the tone arm, and the sliding carrier and rotating cam member are adapted to be actuated by Bowden or like mechanism through which the operation of the machine as a whole is controlled by the operator.

The invention will be best understood from the following detailed description of the embodiment of the invention illustrated in the accompanying drawings, in which Fig. 1 is a. front elevation of the apparatus with the swinging arm shown in section.

Figure l is a section of the hand control device taken on the line 1 1 of Figure 1.

Fig. 2 is a side elevation showing the swinging arm in elevation with the record device mounted thereon.

Fig. 3 is a plan partly in section showing the record gri ping device moved into position over the rotating table of the gramophone.

Fig. 4 is a detail view on an enlarged scale showing the rotating cam member and asso- 1923, serial No. 669,770, and in Great Britain October 25, 1922.

ciated arts in elevation, the swinging arm being s own in section.

Fig. '5 is a plan of the parts shown in Fig. 4.

Fig. 6 is an elevation of the rotating table and tone arm showing the mechanism for manipulating the tone arm.

Fig. 7 is an elevation of the parts shown in Fig. 6 taken at right angles to the plane of'projection of Fig. 6

Fig. 8 isa detail view on an enlarged scale of one of the stop devices for actuating the grippers of the record gripping device when the latter is in position over the rotating table.

Figure 9 is a detail view 011 an enlarged scale showing part of the swinging arm and associated parts.

As shown in the drawings, the machine movably mounted in a box or frame 2 carried on fixed supports 3. The rotating table 4 of the gramophone above the frame 2 on a vertical shaft 5, which extends downwardly through the frame and is suitablyconnected to a motor (not shown) disposed below the frame. The tone arm 6 is suitably connected to a horn-carrying member 7 mounted on a bracket 8 on the frame a flange 9 having bolt holes 10 by means of which any suitable form of horn may be secured thereto.

The record cabinets are divided into opensided vertical compartments 11 adapted to accommodate ordinary disc records and having their bottom walls inclined so that the records tend to roll out by gravity towards the front of the machine. The records are normally prevented from rolling out of the compartments 11 by a horizontal strap or band 12, which is passed round the frame 2 over sheaves 13 mounted in brackets on the corners of the frame 2 and is connected at its opposite ends to a sliding carrier 14 mounted on rollers 15 running on a pair of horizontal rails 16 extending transversely across the front of the frame 2.

The carrier 14 is formed to receive a record from'any one of the compartments 11 between a pair of vertical members 17 carrying forwardly extending cheeks 18, but the records are normally prevented from passing between the members 17 by means of a swinging flap or tongue 19 mounted on a rock shaft 20 rotatable in bearings in the proper is mounted 2 and provided with v 7'5 comprises a number of record cabinets l relower ends of the members 17. The tongue 19 normally extends upwardly between the members 17 and carries a pin 21, which, in this position of the parts, abuts the end of a curved groove 22 formed in one of the members 17, the members 17 and 19 being so proportioned and arranged that, when the pin 21 abuts the end of the groove 22, the edges of the members 17 and 19 are in one plane with the inner surface of the strap 12 and form with the strap a substantially unbroken surface capable of sliding freely across the edges of the records in the compartments 11.

The groove 22 is extended, as shown at 22, across the inner surface of one of the cheeks 18 so as to allow the tongue 19 to swing to the position shown in dot and dash lines'in Fig. 2. One end of the shaft projects through one of the members 17 and carries a lever arm 23 pivoted to a rod 24 guided in a hole 25 in a platform 26 carried by the sliding carrier 14. A spring 19' acting between the platform 26 and a collar 19 fixed on the rod 24 serves to hold the tongue 19 yieldingly in the position shown in dotted lines in Figure 2.

The upper end of the rod 24 carries a fork member 27 adapted to be engaged by a sleeve 28 hinged at 29 to a rotary shaft 30 mounted in bearings on the platform 26. The sleeve 28, 'which carries within it a swinging arm 31 to which a record gripping device 32 is secured, engages in a helical cam groove 33 formed in a hollow conical rotary member 34 mounted on and concentrically I with the shaft 30.

Mounted on the platform 26 is an arcuate plate 35 concentric with the shaft 30. The plate 35 has an L-shaped slot 36 through which the swinging arm 31 extends. square plate member 37-for1ned with a projection 37 a is feathered on the arm 31 and is normally held in the position shown in Fig. 5 by springs 37 on the arm 31. The member 37 is adapted to be engaged by guide plates 38, 39, 40, 41 disposed along the edges of the slot 36 as shown in Figs. 4 and 5. The guide plates 39 and 40 have curved ends 39, 40 for a purpose which will appear hereinafter, and the guide plate 41 has a curved ofl'set portion 42 and carries a spring loaded pawl or switch 43. The pawl 43 is adapted to slide the member 37 outwardly clear of the edge of the plate 41, when the arm 31 swings past it in a clockwise direction (Fig. 5), but it allows the member 37 to pass it in the opposite direction without being displaced. The rotary member 34 carries a pin 44 on which is rotatably mounted a sleeve 46 which carries a pawl member 44 and an arm 45. The pawl member 44 is loaded by a spring 44 and normally locks the sleeve 28 at the upper end of the groove 33. The arm 45 however is adapted to be engaged by a pin 47 on the plate 35 in the position shown in Fig. 5, so as to release the pawl member 44 at this point.

The record ripping device consists of a semi-circular rame 48 secured to the arm 31, and carries three record gripping levers 49, 50, 51 having projections 52 adapted to engage the edge of the record. The projections 52 of the levers 49 and 51 are spaced 'to engage the record at such points on its circumference that a diameter of the record will lie between the lever 50 and a line joining the projections 52 of the levers 49 and 51. The levers 49, 50 and 51 are pivoted on brackets 53 on the frame 48. The lever 51 carries an arm 54 pivoted to one end of a link 55, which is connected at its other end to an arm 56 pivoted on a bracket on the frame 48. A second link 57 is pivoted at one end to the arm 56 and at the other end to an arm 58 on the lever 50. The arm 58 is connected to an arm 59 on the lever 49 through links 60, 61 and an arm 62, similar to the links 55, 57 and arm 56. A spring loaded detent 63 pivoted to the link 5 is adapted to engage in either of two notches 64 in a plate 65 on the frame '48.

The arms 58 and 54 on the gripping levers 50 and 51 carry pins 66 and 66 adapted to engage fixed stops 71, 71 on the frame 2 (Fig. 3), and spring loaded pawls 72, 7 2* (see also Fig. 8) are mounted adjacent the stops 71, 71 in the path of movement of the pins 66, 66*. A forked arm 67 is pivoted on the arm 59 and is normally held in the. position shown in Fig. 2 by a spring 69, which resists movement of the forked arm about its pivot in either direction. A forked arm 67 is pivoted on an arm 69 fixed to the lever 49 and is normally held in the position shown in Fig. 2 by a spring 69 acting similarly to the spring 69. The forked arms 67 and 67 co-operate with fixed stops 70 and 70 mounted on the sliding carriage 14 and so disposed that the stop 70 engages the forked arm 67 when the arm 31 swings down about its pivot 29 with the gripping levers 49, 50, 51 in the release posltion (that is the position shown in Fig. 3), whilst the stop 70 engages the forked arm 67 when the arm 31 swings down about its pivot 29 with the gripping levers 49, 50, 51 in the gripping position (that is rocked in a clockwise direction from the position shown in Fig. 2).

The tone arm 6 carries a bent arm 73 which extends beneath the table 4 and carries a roller 74 adapted to engage a spiral step or ledge 75 fixed to the underside of the table 4 and terminating at its inner end in a downwardly curved portion 76. An arm 7 8 mounted ona rock shaft 79 on the frame 2 and normally held in the vertical position .by a spring 78 carries a pin 80 adapted to engage the arm 73 when the tone arm is swung towards the -outer edge of the record.

82 formed with a U-shaped slot 83 in in the path of An arm 81 is mounted on the rock shaft 79 movement of the swinging arm 31', and is adapted to be rocked by the arm 31 when the latter reaches the position shown in Fig. 3.

Themachine is provided with a hand con.- trol device consisting-of a shallow box frame which is slidably mounted a finger piece 84 connected to fixtures on the sliding carrier 14 by c an endless Bowden wire 85. The wire 85 is guided in a groove 85 beneath the slot 83 and passes through two flexible cables 86 fixed at their ends to brackets 87 on the ends of the upper rail 16 as shown in Fig. 1. The finger piece 84 is formed with a pointer 88 moving on a scale 89 on the box frame 82, and numbered to correspond with numbers assigned to the record compartments 11. The hollow rotary member 34 is formed with pulley grooves 90 (seeFig. 4) on which are wound the two ends of a Bowden wire 91 (not shown in Fig. 4) passing through flexibrackets (not shown) on the sliding end to. carrier 14 and connected at their other ends to the box frame 82. The wire 91 passes straight through the box frame 82 and is connected ble cables 92 (Fig. 1) anchored at one to a finger piece 93 formed with a pointer 94 and mounted to a slide in a slot 93 in the box frame. The position of the finger piece 93 on the wire 91 is so adjusted .that when the rotating member 34 is in the normal position (as shown in Figs. 2 and 4), the pointer 94 is over a mark 95 on the box frame 82 and the ends of the wire 91 are wound round the pulley grooves 90- in opposite directions, so that when the finger piece 92 is moved to the right hand end of the slot the rotating member is rotated through one revolution in a clockwise direction (Fig. 5) and when the finger piece is moved to the other end of the slot it is rotated in an anticlockwise direction through such an angle as-to bring the arm 31 into the position shown in Fig. 3.

The operation of the apparatus will now be described.

In the normal position of the parts, the sliding carrier 14 is disposed opposite the end record compartment 11 on the left hand side of Fig. 1, the pointer 88 of the finger piece 84 being over the mark numbered 1 on the scale 89. The record gripping device 32, arm 31 and associated parts are in the position shown in Figs. 2 and 4.

\Vhen the operator desires to play a record, he first slides the finger piece 84 in' the groove 83 to bring the pointer 88 opposite the number on the scale 89 corresponding to the record which he desires to play. The movement of the finger piece 84 is transmitted to the sliding carrier 14 through the Bowden wire 85 so that the sliding carrier is brought into position oppositethe desired record compartment 11.

'aclockwise direction (Fig. 5).

v spring 69 during by engagement in one of The operator then moves the finger piece 93 to the right hand end of the slot 93. This movement is transmitted through the Bowden wire 91 to the rotating member'34, which is rotated through one revolution" in The action of the cam groove 33 on the sleeve 28, causes the arm 31 and record gripping device 32 to swing downwardly about the pivot 29.

during this rotation of the member 34, horizontal swinging movement of the arm 31 being prevented by the engagement of the member 37 with the guide plate 38. During this downward movement of the arm 31, the sleeve 28 engages the forked members 27 and depresses the rod 24 thus rocking the arm 23 and swinging the flap 19 against the action of its spring into the position shown in dot and dash lines in Fig. 2. This allows a record to roll out of a record compartment 11 opposite the carriage 1.4 and to pass between the cheeks 18, where it is supported by the flap 19.

At this point, the record gripping device 32 reaches a position in which it embraces the record supported on the flap 19 and in which the forked arm 67 is engaged by the stop 7(). Owing to the angular position of the record gripping lever 49, the forked arm 67 does not engage the stop but passes on one side thereof. As the arm 31 completes its downward swinging movement, the record gripping lever 49 .is rocked by the engagement of the stop 7 0' with the forked arm 67 (the forked arm 67 being rocked idly by the stop 70 against the action of the this movement) and the record gripping levers 50, 51 are rocked in unison with the record gripping lever 49 throughthe links 61, 60, 57, 55. The pro' jections 52 on the record gripping levers are thus caused to engage and the record. The detent 63 holds the record gripping levers, yieldingly but suiiicient- 1y firmly, in the record. gripping position the grooves 64.

The operator 'now returns the finger piece 93 to its original position, thus. bringing the rotary mem er 34 back to its original position and causing the arm 31"and record gripping device 32 to swing back into the position shown in Fig. vice 32 carrying the record with it. During this movement, the rod 24 is released and the flap 19 returns to its original position. 1

grip the edge of 2, the (record gripping de The operator now moves the finger iece 93 to the left hand end of the slot 93 Fig. 1), and this movement is transmitted through the wire 91 to the rotary member 34, which is thus rotated through about 135 in an anti-clockwise direction (Fig. 5) to the position shown in Fig; 3. The arm 31 and record gripping device 32 are carrled round with the rotary me ber 34 by the engagement of the sleeve 2 with the upper end of the cam groove 33. During this movement, the curved end 40 of the guide plate 40 engages the projection 37 on the member 37 and rotates the latter together with the shaft 31 and record gripping device through 90, so that when the sleeve 28 reaches the end of the slot 36, the record gripping device 32 reaches the position shown in Fig. 3 with the record over the table 4. At the same time the arm 45 is disengaged from the pin 47, so that the pawl member 44 is moved by its spring into engagement with the sleeve 28.

As the record gripping device 32 moves into the position shown in Fig. 3, the pin 66 on the arm 54 trips past the pawl 72 and is engaged by the stop 71, which rocks the lever 51 out of engagement with the edge of the record. The levers 49 and 50 are moved in unison with the lever 51 through the links 55, 57 60, 61 the detent 63 being shifted by this movement from one of the notches 64 to'the other, and the record is thus released and allowed to rest on table 4. At the same time, the arm 81 is rocked by the arm 31 and releases the bent arm 73, thus lowering the tone arm 6 and bringing the needle of the sound box into engagement with the record. When the apparatus is in use, the

table 4 is rotated continuously, so that as soon as the needle engages the record the playing operation commences. needle reaches the end of the record, the roller 74 (which swings towards the centre of the record in unison with the tone arm) is engaged by the downwardly curved inner end of the spiral ledge 75, and rides up onto the ledge, thus lifting the tone arm 6 through the bent arm 73. The roller 74 is then returned to its original position by the rotation of the spiral ledge 75 with the table 4, and swings the bent arm 73 and tone arm 6 back to the starting position, which is the position shown in the drawings.

Whilst the tone arm 6 is being returned to the starting position, the operator returns the finger piece 93' to the normal position opposite the mark 95, thus rotating the member 34 in the clockwise direction (Fig. 5) back to the position shown in Fig. 5. The arm'31 and record gripping device 32 are carried round with the member 34 by the engagement of the pawl member 44 with the sleeve 28, the arm 31 swinging about the axis of the shaft 30, which rotates in its When the bearings. As the record gripping device moves away from the position s own in Fig. 3, the pin 66 on the arm 54 is tripped by the pawl 72 and rocks the lever 51 to bring its rojection 52 into engagement with the record The levers 49 and 50 are rocked in unison with the lever 51 to bring their projections 52 into engagement with the edge of the record, through the links 55, 57, 60, 61, the detent 63 being moved by the link 57 from one of the notches 64 to the other. The record is thus gripped by the projections 52 and is carried withthe record gripping device 32 as the latter swings round with the arm '31.

While the operations 'just described are taking place, the arm 81 is released by the return of the swinging arm 31, and the arm 78 is returned by its spring to its normal vertical position. When therefore the roller 74 reaches the outer end of the spiral ledge 75, the bent arm 73 rests on the pin 80. as shown in Figs. 6 and 7, and the tone arm 6 is therefore supported in the starting position.

During the continued swinging movement of the arm 31 away from the position shown in Fig. 3, the member 37 is engaged by the pawl or switch 43 and caused to slide outwardly on its feather, until it slides past the outer edge of the guide plate 41, This frees the arm 31 for rotation, and the record grip ping device therefore rotates .by gravity, rototing the arm 31' and member 37 with it through about 90 in the anti-clockwise direction (Fig. 4) to a position in which the projection 37'" extends downwardly below the edge of the guide plate 41. The further continued swinging movement of the arm 31 causes the projection 37 to be engaged by the curved ofl'set portion 42 of the guide plate 41, which rotates the member 37 together with the arm 31 and record gripping device-32 through a further 90 in an anti-clockwise direction, thus causing the projection 37 to clear the outer edge of the guide plate 41 and allowing the member 37 to be returned by the spring 37 b to its original position on the arm 31. Further rotation of the member 37 is now prevented by the guide plates 40 and 41, so that when the arm 31 reaches the angular position in which it is shown in Figs. 4 and 5, the record gripping device has been rotated on its axis girough 180 from the position shown in If the operator now desires to play the other side of the record, he again moves the finger piece 93 to the left hand end of the slot 93* Fig. 2, thus rotating the member 34 in an anti-clockwise direction (Fig. 5). This causes the record gripping device 32 to swing round and deposit the record on the table 4 and to lower the tone arm 6 through the members 81, 79, 78, 73. These operations through 90 in the clockwise direction 4) thus bringing the are carried out in the same way as before except that, this time, the record gripping levers 49, 50 and 51 are actuated by engagement of the pin 66 with the stop 71. Moreover,-as the record gripping device is now rotated through 180 from its position when last it deposited the record on the table, the opposite side of the record is now played. A fragment of the record gripping device in the position which it occupies when this side of the record is being played is shown by dot and dash lines in Fig. 8.

When the record is played, the tone arm 6 is automatically I returned to the starting position as before. During this operation, the operator slides the finger piece 93 back to the normal position with the pointer 94 over the mark 95. thus rotating the member 34 in .the clockwise direction (Fig. 5). At the beginning of this movement the record is picked up by the levers 49, 50 and 51, the parts 71 and 72 acting similarly to the parts 71 and 72. ,The' arm 31 is carried round with the member 34 by the engagement of the pawl member 44 with the sleeve 28. As the member 37 passes the pawl or switch 43 it is caused to slide on its feather until it clears the edge of the guide plate 41, whereupon the record gripping-device rotates by gravity and rotates the arm 31 (Fig. member 37 into a position in which the projection'37 points in the downward direction. During the continued swinging movement of the arm 31, the member 37 is rotated through 90 in the anticlockwise direction (Fig. 4) by engagement of the projection 37 with the curved offset portion 42 of the guide plate 41. As the projection 37 thus clears the edge of the guide plate 41, the member 37 is returned to 1ts original position axially on the arm 31 by the spring 37", and is prevented from further rotation by engagement with the guide plates 40 and 41. When therefore the arm 31 reaches the angular position in which it is shown in Fig. 1, the member 37 is in a position in whch the projection 37 points to the right. At this point the arm 45 is engaged by the pin 47 and rocks the pawl member 44, which is thus released from engagement with the sleeve 28.

The operator now slides the finger piece 84 in its slot 83 to bring the pointer 88 opposite the number on the scale 89 corresponding to the number of the record which has been p played. The movement of the finger piece 84 is transmitted through the Bowden wire 14, and the latter is brought opposite the compartment 11 from which the record carried by the record gripping device 32 was taken.

When this has been done, the operator slides the finger piece 93 to the ri ht hand end of the slot 95, thus rotating t e membrings the record gripping device ber 34 through a complete revolution in the clockwise direction (Fig. 5).

As previously stated, the pawl member 44 is now released from engagement with the sleeve 28. The latter therefore slides in the cam slot- 33 as the member 34 is rotated and is swung downwardly about the hinge 29, carrying with it the arm 31 and record gripping device 32. At the beginning of this movement, the member 37 is rotated through 90 in the anticlockwise direction by engagement of the projection 37 with the curved end 39 of the guide plate 39. This 32 into the angular position about the axis of the arm 31 in which it is shown in Fig. 2, and further rotation of the record gripping de vice during the downward swinging movement of the arm 31 is prevented by engage ment of the member 37 with the plates 38, 39.

As the sleeve 31 swings downwardly about guide the pivot 29, it engages and depresses the forked end of the rod 24, thus rocking the arm 23 and swinging the flap 19 into the position shown in dot and dash lines in Fig. 2. At the same time the forked arm 67 a engages the stop 7 0 whilst the forked arm 67 passes on one side of the stop 70. The record gripping lever 49 is therefore rocked into the release position (the forked arm 1 67 being rocked idly by the stop against the action of the spring 69*, during this movement) and the levers 50, 51 are-moved in unison with the lever 49 through the links 61, 60, 57, 55, the record being thus released and deposited on the flap 19.

The operator now slides the finger piece 93 back to its original position opposite the mark 95, thus rotating throu h one revolution in the anti-clockwise direction (Fig. 5) and swinging the arm 31 back to the normal position (shown in Fig. 2). v

As the arm 31 continues to swing back,

1 the rod 24 is released and the flap 19 swings up under the action of its spring and pushes therecord into the record compartment 11. The parts then assume the normal osition shown in Fig. 2 and the apparatus is ready for the selection of anotherrecord If, after returning the finger piece 93 to the normal position opposite the mark 95 when one'side of the record has been played, the operator does not wish to play the oposite side of the record, he skips the operations described above for playing the opposite side of the record, and proceeds at once to move the finger piece 84 opposite the number on the scale 89 corresponding to the record carried bylthe record gripping device. At the beginmng of the downward swinging movement of thearm place therefore, the extension 37 of the member 37 points the member 34 3 1, which next takes to the right. The member l 37 is therefore rotated in the anti-clockwise direction (Fig. 4) by engagement of the projection 37 with the curved end 39 of the guide plate 39, when the arm 31 swings 6 downwardly. I claim 1. In a sound reproducing machine having a rotating table and a tone arm, a number of record compartments for storing records, 10 a sliding carrier capable of being positioned opposite any one of said compartments, a support on said sliding carrier, a swinging arm capable of executing vertical and horizontal swinging movements about said support, a record gripping device mounted on said swinging arm, means for transferring a record from a record compartment to said record gripping device and for returning the record from said record gripping device to the record compartment, means for moving said swinging arm into and out of engagement with said transferring means and for moving said swinging arm into and out of position over said rotating table, means for transferring a record from said record gripping device to said rotating table and for returning the record to said record gripping device, means controlled from a distance for shifting said sliding carrier into position opposite any one of said record compartments, and means controlled from a distance for actuating said means for moving said swinging arm including means actuated by said record gripping device for manipulating said tone arm. i

2. A sound reproducing machine according to claim 1, wherein said first-mentioned transferring means comprises a swinging flap mounted on said sliding carrier and means actuated by said record gripping device for moving said flap.

3. A sound reproducing machine according to claim 1, including a flexible band passed round said record compartments and having two ends connected to said sliding carrier, said first-mentioned transferring means comprising a swinging flap mounted on said sliding carrier and means actuated by said record gripping device for moving said flap.

4. A sound reproducing machine according to claim 1, wherein said record gripping device comprises a semi-circular frame, three record gripping levers on said frame and pivoted links connecting said levers, including stops on the machine and actuating members on said levers co-operating with said stops.

5. A sound reproducing machine according to claim 1, wherein said means for moving said swinging arm comprises a hollow rotary cam member having a spiral groove engaging said arm, and fixed guides co-operating with said cam member in the control of said arm, said arm carrying a square plate member co-operating with said guides for rotating said arm about its own axis.

6. A sound reproducing machine according to claim 1, including Bowden mechanism connected to said means controlled from a distance, a box frame having grooves and finger pieces sliding in said grooves and connected to said Bowden mechanism.

7. In a sound reproducing machine having a rotating table and .a tone arm, a number of record compartments for storing records, a sliding carrier capable of being positioned opposite any one of said compartments, a support on said sliding carrier, a swinging arm capable of executing vertical and horizontal swinging movements about said support and of rotating about its own axis, a hollow cam member rotatable about said support and having a spiral groove engaging said swinging arm,'fixed guides on said sliding carrier engaging said swinging arm and co-operating with said hollow cam member in the control of said arm, a recordgripping device mounted on said swinging arm, means for transferring a record from a record compartment to said record gripping device and for returning the record from said record gripping device to the record compartment, means controlled by. said record gripping device for actuating said transferring means, means for transferring a record from said record gripping device to said rotating table and for returning the record to said record gripping device, Bowden mechanism for shifting said sliding carrier into position opposite any one of said record compartments, and Bowden mechanism for actuating said hollow cam member, including means actuated by said record nipulating said tone arm.

THOS. BREWIN.

gripping device for ma 

